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authentication - encryption
(397 results)Search the Library
Mission Statement
TechRepublic's ITPapers is the Web's largest library of free technical IT white papers, webcasts, and case studies. Covering IT categories including Data Management, IT Management, Networking, Communications, Enterprise Applications, Storage, Security and much more, TechRepublic's White Paper Directory is the best source for technical white papers and IT information.
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White Papers
Simultaneous Latent Fingerprint Recognition
Jul 2011
Simultaneous latent fingerprints are clusters of friction ridge impressions deposited concurrently in a crime scene. The analysis of these impressions is a complex task to infer individualization,...
Provided by West Virginia University
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White Papers
On the Dynamic Selection of Biometric Fusion Algorithms
Jul 2011
Biometric fusion involves consolidating the output of two or more biometric classifiers in order to render a decision about the identity of an individual. The authors consider the problem of...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Biometric Classifier Update Using Online Learning: A Case Study in Near Infrared Face Verification
Jan 2010
The performance of large-scale biometric system deteriorates over time as new individuals are continually enrolled. To maintain a high-level of performance, the classifier has to be retrained...
Provided by West Virginia University
-
White Papers
Quality-Based Fusion for Multichannel Iris Recognition
Jan 2010
The authors propose a quality-based fusion scheme for improving the recognition accuracy using color iris images characterized by three spectral channels - Red, Green and Blue. In the proposed...
Provided by West Virginia University
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White Papers
On Analysis of Rural and Urban Indian Fingerprint Images
Jan 2010
This paper presents a feasibility study to compare the performance of fingerprint recognition on rural and urban Indian population. The analysis shows that rural population is very challenging and...
Provided by Indraprastha Institute of Information Technology
-
White Papers
Combining Pores and Ridges With Minutiae for Improved Fingerprint Verification
Dec 2008
This paper presents a fast fingerprint verification algorithm using level-2 minutiae and level-3 pore and ridge features. The proposed algorithm uses a two-stage process to register fingerprint...
Provided by West Virginia University
-
White Papers
Effect of Plastic Surgery on Face Recognition: A Preliminary Study
Apr 2009
Variations in pose, expression, illumination, aging and disguise are considered as major challenges in face recognition and several techniques have been proposed to address these challenges....
Provided by West Virginia University
-
White Papers
Fingerprint Indexing Using Minutiae and Pore Features
May 2009
In this paper, the authors propose level-2 and level-3 feature based fingerprint indexing algorithm to improve the speed and accuracy of identification. Indexing parameters are computed using the...
Provided by West Virginia University
-
White Papers
Face Recognition With Decision Tree-Based Local Binary Patterns
Oct 2010
Many state-of-the-art face recognition algorithms use image descriptors based on features known as Local Binary Patterns (LBPs). While many variations of LBP exist, so far none of them can...
Provided by Pontificia Universidad Catolica de Chile
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White Papers
Performance of the Fuzzy Vault for Multiple Fingerprints
Aug 2010
The fuzzy vault is an error tolerant authentication method that ensures the privacy of the stored reference data. Several publications have proposed the application of the fuzzy vault to...
Provided by secunet Security Networks AG
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White Papers
A Reference Framework for the Privacy Assessment of Keyless Biometric Template Protection Systems
May 2011
Over the past decades, a number of methods have been reported in the scientific literature to protect the privacy of biometric information stored in biometric systems. Keyless Biometric Template...
Provided by Fraunhofer IGD
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White Papers
On the Vulnerability of Face Verification Systems to Hill-Climbing Attacks
Apr 2009
In this paper, the authors use a general hill-climbing attack algorithm based on Bayesian adaption to test the vulnerability of two face recognition systems to indirect attacks. The attacking...
Provided by Universidad Autonoma de Madrid
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White Papers
A Novel Statistical Generative Model Dedicated to Face Recognition
May 2009
In this paper, a novel statistical generative model to describe a face is presented, and is applied to the face authentication task. Classical generative models used so far in face recognition,...
Provided by Reed Elsevier
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White Papers
Feature Distribution Modelling Techniques for 3D Face Verification
Feb 2010
This paper shows that Hidden Markov Models (HMMs) can be effectively applied to 3D face data. The examined HMM techniques are shown to be superior to a previously examined Gaussian Mixture Model...
Provided by Idiap Research Institute
-
White Papers
A Comparative Study of Two State-of-the Art Sequence Processing Techniques for Hand Gesture Recognition
Mar 2009
In this paper, the authors address the problem of the recognition of isolated, complex, dynamic hand gestures. The goal of this paper is to provide an empirical comparison of two state-of-the-art...
Provided by Ecole Polytechnique Federale de Lausanne
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White Papers
Heterogeneous Face Recognition: Matching NIR to Visible Light Images
May 2010
Matching Near-InfraRed (NIR) face images to VISible light (VIS) face images offers a robust approach to face recognition with unconstrained illumination. In this paper, the authors propose a novel...
Provided by Michigan State University
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White Papers
Heterogeneous Face Recognition Using Kernel Prototype Similarities
Feb 2011
Heterogeneous Face Recognition (HFR) involves matching two face images from alternate imaging modalities, such as an infrared image to a photograph, or a sketch to a photograph. Accurate HFR...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Face Recognition Across Time Lapse: On Learning Feature Subspaces
Dec 2011
There is a growing interest in understanding the impact of aging on face recognition performance, as well as designing recognition algorithms that are mostly invariant to temporal changes. While...
Provided by Michigan State University
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White Papers
Face Recognition: Some Challenges in Forensics
Mar 2011
Face recognition has become a valuable and routine forensic tool used by criminal investigators. Compared to automated face recognition, forensic face recognition is more demanding because it must...
Provided by Michigan State University
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White Papers
Face Tracking and Recognition at a Distance: A Coaxial & Concentric PTZ Camera System
Aug 2011
Face recognition has been regarded as an effective method of subject identification at a distance because of its covert and remote sensing capability. However, face images have a low resolution...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Restoring Degraded Face Images: A Case Study in Matching Faxed, Printed, and Scanned Photos
Jun 2011
The authors study the problem of restoring severely degraded face images such as images scanned from passport photos or images subjected to fax compression, downscaling, and printing. The purpose...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
On Matching Digital Face Images Against Scanned Passport Photos
Sep 2009
In this paper the problem of matching high-resolution digital face images against low-resolution passport photos scanned from the original document is studied. The challenges involved in such a...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Rank-Based Distance Metric Learning: An Application to Image Retrieval
Mar 2008
The authors present a novel approach to learn distance metric for information retrieval. Learning distance metric from a number of queries with side information, i.e., relevance judgements, has...
Provided by Michigan State University
-
White Papers
Tattoo-ID: Automatic Tattoo Image Retrieval for Suspect & Victim Identification
Dec 2007
Tattoos are used by law enforcement agencies for identification of a victim or a suspect using a false identity. Current method for matching tattoos is based on human-assigned class labels that is...
Provided by Michigan State University
-
White Papers
Facial Marks: Soft Biometric for Face Recognition
Feb 2010
The authors propose to utilize micro features, namely facial marks (e.g., freckles, moles, and scars) to improve face recognition and retrieval performance. Facial marks can be used in three ways:...
Provided by Michigan State University
-
White Papers
Predicting Biometric Authentication System Performance Across Different Application Conditions: A Bootstrap Enhanced Parametric Approach
May 2007
The performance of a biometric authentication system is dependent on the choice of users and the application scenario represented by the evaluation database. As a result, it is highly unlikely to...
Provided by University of Surrey
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White Papers
A Method for Estimating Authentication Performance Over Time, With Applications to Face Biometrics
Oct 2007
Underlying biometrics are biological tissues that evolve over time. Hence, biometric authentication (and recognition in general) is a dynamic pattern recognition problem. The authors propose a...
Provided by University of Surrey
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White Papers
A Methodology for Identifying Weak Users for Controlled Enrollment and Multimodal Fusion
Jul 2008
Biometric performance assessment is made difficult by virtue of the fact that each user in the database introduces variability that cannot be controlled even with a well designed acquisition...
Provided by University of Surrey
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White Papers
On the Use of Log-Likelihood Ratio Based Model-Specific Score Normalisation in Biometric Authentication
May 2007
It has been shown that the authentication performance of a biometric system is dependent on the models/templates specific to a user. As a result, some users may be more easily recognised or...
Provided by University of Surrey
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White Papers
Group-Specific Score Normalization for Biometric Systems
Apr 2010
The problem of biometric menagerie, first pointed out by Doddington et al. (1998), is one that plagues all biometric systems. They observe that only a handful of clients (enrolled users in the...
Provided by University of Surrey
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White Papers
Making Better Biometric Decisions With Quality and Cohort Information: A Case Study in Fingerprint Verification
May 2009
Automatically recognizing humans using their biometric traits such as face and fingerprint will have very important implications in peoples' daily lives. This problem is challenging because...
Provided by University of Surrey
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White Papers
Model Based Separation of Overlapping Latent Fingerprints
Feb 2012
Latent fingerprints lifted from crime scenes often contain overlapping prints, which are difficult to separate and match by state-of-the-art fingerprint matchers. A few methods have been proposed...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Periocular Biometrics in the Visible Spectrum
Mar 2011
The term periocular refers to the facial region in the immediate vicinity of the eye. Acquisition of the periocular biometric is expected to require less subject cooperation while permitting a...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Quality Controlled Multimodal Fusion of Biometric Experts
Nov 2007
The quality of biometric samples used by multi-modal biometric experts to produce matching scores has a significant impact on their fusion. The authors address the problem of quality controlled...
Provided by University of Surrey
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White Papers
A Family of Methods for Quality-Based Multimodal Biometric Fusion Using Generative Classifiers
Aug 2008
Automatically verifying the identity of a person by means of biometrics (e.g., face and fingerprint) is an important application in peoples' day-to-day activities such as accessing banking...
Provided by University of Surrey
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White Papers
Handling High Dimensionality in Biometric Classification With Multiple Quality Measures Using Locality Preserving Projection
Apr 2010
The use of quality measures in biometrics is rapidly becoming the standard strategy for improving performance of biometric systems, especially in the presence of variable environmental conditions...
Provided by University of Surrey
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White Papers
Model and Score Adaptation for Biometric Systems: Coping With Device Interoperability and Changing Acquisition Conditions
Jan 2010
The performance of biometric systems can be significantly affected by changes in signal quality. In this paper, two types of changes are considered: change in acquisition environment and in...
Provided by University of Surrey
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White Papers
On Using Error Bounds to Optimize Cost-Sensitive Multimodal Biometric Authentication
Aug 2008
While using more biometric traits in multimodal biometric fusion can effectively increase the system robustness, often, the cost associated to adding additional systems is not considered. In this...
Provided by University of Surrey
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White Papers
Incorporating Variation of Model-Specific Score Distribution in Speaker Verification Systems
Dec 2007
It has been shown that the authentication performance of a biometric system is dependent on the models/templates specific to a user. As a result, some users may be more easily recognized or...
Provided by University of Surrey
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White Papers
A Unified Framework for Biometric Expert Fusion Incorporating Quality Measures
Apr 2011
This paper proposes a unified framework for quality-based fusion of multimodal biometrics. Quality-dependent fusion algorithms aim to dynamically combine several classifier (biometric expert)...
Provided by University of Surrey
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White Papers
On the Theory and Practice of Personal Digital Signatures
Apr 2009
The authors take a step towards a more realistic modeling of personal digital signatures, where a human user, his mobile equipment, his PC and a server are all considered as independent players in...
Provided by University of Aarhus
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White Papers
Authenticated Broadcast With a Partially Compromised Public-Key Infrastructure
Aug 2009
Given a Public-Key Infrastructure (PKI) and digital signatures, it is possible to construct broadcast protocols tolerating any number of corrupted parties. Almost all existing protocols, however,...
Provided by University of Maryland
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White Papers
Joint State Theorems for Public-Key Encryption and Digital Signature Functionalities With Local Computation
Apr 2008
Composition theorems in simulation-based approaches allow building complex protocols from sub-protocols in a modular way. However, as first pointed out and studied by Canetti and Rabin, this...
Provided by University of Trier
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White Papers
Proposal of a New Efficient Public Key System for Encryption and Digital Signatures
Oct 2007
In this paper a new efficient public key cryptosystem usable for both encryption and digital signatures is presented. Due to its simple structure this public key cipher can be implemented easily...
Provided by WEB.DE
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White Papers
SSE Implementation of Multivariate PKCs on Modern X86 CPUs
Jul 2009
Multivariate Public Key Cryptosystems (MPKCs) are often touted as future-proofing against Quantum Computers. It also has been known for efficiency compared to "Traditional" alternatives. However,...
Provided by International Association for Cryptologic Research
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White Papers
Provably Secure Timed-Release Public Key Encryption
May 2008
A timed-release cryptosystem allows a sender to encrypt a message so that only the intended recipient can read it only after a specified time. The authors formalize the concept of a secure...
Provided by Association for Computing Machinery
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White Papers
Interoperable PKI Data Distribution in Computational Grids
Aug 2008
One of the most successful working examples of virtual organizations, computational grids needs authentication mechanisms that inter-operate across domain boundaries. Public Key Infrastructures...
Provided by Dartmouth College
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White Papers
Techniques for Validation and Controlled Execution of Processes, Codes and Data: A Survey
May 2010
Various security mechanisms are available to validate, authenticate and permit codes, data and scripts for executing in a computing device. Accordingly, different techniques and tools have been...
Provided by University of Memphis
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White Papers
Fingerprint-Based Fuzzy Vault: Implementation and Performance
Dec 2007
Reliable information security mechanisms are required to combat the rising magnitude of identity theft in the society. While cryptography is a powerful tool to achieve information security, one of...
Provided by Michigan State University
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White Papers
Hardening Fingerprint Fuzzy Vault Using Password
Dec 2007
Security of stored templates is a critical issue in biometric systems because biometric templates are non-revocable. Fuzzy vault is a cryptographic framework that enables secure template storage...
Provided by Michigan State University
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White Papers
Biometric Template Transformation: A Security Analysis
Jan 2010
One of the critical steps in designing a secure biometric system is protecting the templates of the users that are stored either in a central database or on smart cards. If a biometric template is...
Provided by Michigan State University
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White Papers
Securing Fingerprint Template: Fuzzy Vault With Minutiae Descriptors
Jul 2008
Fuzzy vault has been shown to be an effective technique for securing fingerprint minutiae templates. Its security depends on the difficulty in identifying the set of genuine minutiae points among...
Provided by Michigan State University
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White Papers
On the Security of Non-Invertible Fingerprint Template Transforms
Sep 2009
Many transformation functions have been proposed for generating revocable or non-invertible biometric templates. However, their security analysis either ignores the distribution of biometric...
Provided by Michigan State University
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White Papers
A Hybrid Approach for Generating Secure and Discriminating Face Template
Mar 2010
Biometric template protection is one of the most important issues in deploying a practical biometric system. To tackle this problem, many algorithms, that do not store the template in its original...
Provided by Hong Kong Baptist University
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White Papers
A Hybrid Approach for Face Template Protection
Jan 2008
Biometric template protection is one of the important issues in deploying a practical biometric system. To tackle this problem, many algorithms have been reported in recent years, most of them...
Provided by Hong Kong Baptist University
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White Papers
Face Recognition Using Neural Networks
Dec 2009
Face recognition is one of biometric methods, to identify given face image using main features of face. In this paper, a neural based algorithm is presented, to detect frontal views of faces. The...
Provided by Government College Of Engineering Tirunelveli
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White Papers
Secure e-Payment Protocol
Nov 2009
The vast spreading of information in the last decade has led to great development in e-commerce. For instance, e-trade and e-bank are two main Internet services that implement e-transaction from...
Provided by Universität Trier
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White Papers
A Sensor-Based Approach for Dynamic Signature Verification Using Data Glove
Mar 2008
Data glove is a new dimension in the field of virtual reality environments, initially designed to satisfy the stringent requirements of modern motion capture and animation professionals. In this...
Provided by Multimedia University
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White Papers
A New Development Architecture for e-Commerce Platform
Dec 2009
E-commerce is a kind of commercial activity which adopts electronic form under the condition of open Internet. It has become an important life style. The diversity and variability of e-commerce...
Provided by Academy Publisher
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White Papers
An Overview of Registration Based and Registration Free Methods for Cancelable Fingerprint Template
Sep 2010
Cancelable biometric techniques are becoming popular as they provide the advantages of privacy and security, not provided by biometric authentication system. It transforms a biometric signal or...
Provided by University of Pune
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White Papers
A Parallel Framework for Multilayer Perceptron for Human Face Recognition
Feb 2010
Artificial neural networks have already shown their success in face recognition and similar complex pattern recognition tasks. However, a major disadvantage of the technique is that it is...
Provided by Jadavpur University
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White Papers
A Novel Luby-Rackoff Based Cipher in a New Feistel-Network Based LPRKES for Smart Cards
Apr 2010
The RKES (Remotely Keyed Encryption Schemes) are greatly useful in solving the vital problem of how to do bulk encryption and decryption for high-bandwidth applications (like multimedia and video...
Provided by Kyushu University
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White Papers
The Relationship of e-Commerce Readiness to Technology Acceptance: The Case of Barbados
Sep 2008
This is an exploratory study that examines the relationship between selected components of ecommerce readiness and dimensions of Davis' (1989) Technology Acceptance Model. Building upon the notion...
Provided by Quinnipiac University
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White Papers
Optimized Minutiae - Based Fingerprint Matching
Jul 2008
The authors propose a new minutiae-based approach to match fingerprint images using similar structures. Distortion poses serious threats through altered geometry, increases false minutiae, and...
Provided by Malaviya National Institute of Technology
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White Papers
Efficient Small Template Iris Recognition System Using Wavelet Transform
Jan 2011
Iris recognition is known as an inherently reliable biometric technique for human identification. Feature extraction is a crucial step in iris recognition, and the trend nowadays is to reduce the...
Provided by University of Liverpool
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White Papers
IRIS Based Human Recognition System
Oct 2010
The paper explores iris recognition for personal identification and verification. In this paper a new iris recognition technique is proposed using (Scale Invariant Feature Transform) SIFT....
Provided by GGS Indraprastha University
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White Papers
Identification of Untrained Facial Image in Combined Global and Local Preserving Feature Space
Aug 2010
In real time applications, biometric authentication has been widely regarded as the most foolproof - or at least the hardest to forge or spoof. Several research works on face recognition based on...
Provided by P.S.R.Engineering College
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White Papers
A Brief Introduction of Biometrics and Fingerprint Payment Technology
Mar 2009
In this paper the authors have survey on biometric payment system. Biometric payment system is used for various kinds of payment system instead of the tension of cards to put with them and to...
Provided by Myongji University
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White Papers
Trusted e-Commerce User Agent Based on USB Key
Mar 2008
With the development of e-commerce, the client-side security becomes more and more important. In order to assure that the transactions behave as what users expect, be aware of and approved, a...
Provided by Beijing Jiaotong University
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White Papers
Odour User Interface for Authentication: Possibility and Acceptance: Case Study
Mar 2010
Historically, some new technologies are faced with rejection or acceptance. So researchers developed TAM (Technology Acceptance Model). TAM depends upon the user perception of the easiness and...
Provided by University of Minho
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White Papers
Smart Cards: The Future Gate
Oct 2010
Smart Cards are one of the latest applications of Information Technology whose use is growing with each passing day. Like computers today, it is presumed that smart cards, which in fact contain...
Provided by Jamia Millia Islamia
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White Papers
A Novel Human Gait Recognition System
Dec 2010
In this paper considering a new human gait recognition system based on Radon transform which gives a high precision recognition rate. Innovation of this paper allocates to feature extraction and...
Provided by International Journal of Computer and Electrical Engineering (IJCEE)
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White Papers
Ocular Biometric System Focused on Iris Localization and Embedded Matching Algorithm
Dec 2010
The term gait recognition is typically used to signify the identification of people in image sequences by the way they walk. Human gait is a valuable biometric cue that can be used for human...
Provided by International Journal of Computer and Electrical Engineering (IJCEE)
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White Papers
Do Social Networks Improve e-Commerce? a Study on Social Marketplaces
Aug 2008
Social networks have made a significant impact on how Internet users communicate, search for and share data today. Numerous proposals have been made to improve existing distributed systems by...
Provided by Association for Computing Machinery
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White Papers
An Efficient Approach to Facial Feature Detection for Expression Recognition
Nov 2009
An Intelligent Biometrics systems aims at localizing and detecting human faces from supplied images so that further recognition of persons and their facial expression recognition will be easy....
Provided by Academy Publisher
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White Papers
Authenticated Mobile Device Proxy Service
Jun 2009
In the current study the authors present a system that is capable to deliver proxy based differentiated service. It will help the carrier service node to sell a prepaid service to clients and...
Provided by American University of Sharjah
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White Papers
Using Data Fusion for Biometric Verification
Jun 2009
A wide spectrum of systems require reliable personal recognition schemes to either confirm or determine the identity of an individual person. This paper considers multimodal biometric system and...
Provided by California State University
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White Papers
Biometrics Authorize Me!
Jun 2009
Can biometrics do what everyone is expecting it will? And more importantly, should it be doing it? Biometrics is the buzzword "On the mouth" of everyone, who are trying to use this technology in a...
Provided by University of London
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Whitepapers
E-Commerce Adoption and Implementation in Automobile Industry: A Case Study
Dec 2009
The use of Electronic Commerce (EC) technologies enables Small Medium Enterprises (SMEs) to improve their efficiency and competitive position. Much of the literature proposes an extensive set of...
Provided by CPIT
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White Papers
A New Knapsack Public-Key Cryptosystem Based on Permutation Combination Algorithm
Aug 2010
A new secure knapsack cryptosystem based on the Merkle-Hellman public key cryptosystem will be proposed in this paper. Although it is common sense that when the density is low, the knapsack...
Provided by Asia University
-
White Papers
On the Dynamic Selection of Biometric Fusion Algorithms
Jul 2011
Biometric fusion involves consolidating the output of two or more biometric classifiers in order to render a decision about the identity of an individual. The authors consider the problem of...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Biometric Classifier Update Using Online Learning: A Case Study in Near Infrared Face Verification
Jan 2010
The performance of large-scale biometric system deteriorates over time as new individuals are continually enrolled. To maintain a high-level of performance, the classifier has to be retrained...
Provided by West Virginia University
-
White Papers
Quality-Based Fusion for Multichannel Iris Recognition
Jan 2010
The authors propose a quality-based fusion scheme for improving the recognition accuracy using color iris images characterized by three spectral channels - Red, Green and Blue. In the proposed...
Provided by West Virginia University
-
White Papers
On Analysis of Rural and Urban Indian Fingerprint Images
Jan 2010
This paper presents a feasibility study to compare the performance of fingerprint recognition on rural and urban Indian population. The analysis shows that rural population is very challenging and...
Provided by Indraprastha Institute of Information Technology
-
White Papers
Combining Pores and Ridges With Minutiae for Improved Fingerprint Verification
Dec 2008
This paper presents a fast fingerprint verification algorithm using level-2 minutiae and level-3 pore and ridge features. The proposed algorithm uses a two-stage process to register fingerprint...
Provided by West Virginia University
-
White Papers
Effect of Plastic Surgery on Face Recognition: A Preliminary Study
Apr 2009
Variations in pose, expression, illumination, aging and disguise are considered as major challenges in face recognition and several techniques have been proposed to address these challenges....
Provided by West Virginia University
-
White Papers
Fingerprint Indexing Using Minutiae and Pore Features
May 2009
In this paper, the authors propose level-2 and level-3 feature based fingerprint indexing algorithm to improve the speed and accuracy of identification. Indexing parameters are computed using the...
Provided by West Virginia University
-
White Papers
Face Recognition With Decision Tree-Based Local Binary Patterns
Oct 2010
Many state-of-the-art face recognition algorithms use image descriptors based on features known as Local Binary Patterns (LBPs). While many variations of LBP exist, so far none of them can...
Provided by Pontificia Universidad Catolica de Chile
-
White Papers
Performance of the Fuzzy Vault for Multiple Fingerprints
Aug 2010
The fuzzy vault is an error tolerant authentication method that ensures the privacy of the stored reference data. Several publications have proposed the application of the fuzzy vault to...
Provided by secunet Security Networks AG
-
White Papers
A Reference Framework for the Privacy Assessment of Keyless Biometric Template Protection Systems
May 2011
Over the past decades, a number of methods have been reported in the scientific literature to protect the privacy of biometric information stored in biometric systems. Keyless Biometric Template...
Provided by Fraunhofer IGD
-
White Papers
On the Vulnerability of Face Verification Systems to Hill-Climbing Attacks
Apr 2009
In this paper, the authors use a general hill-climbing attack algorithm based on Bayesian adaption to test the vulnerability of two face recognition systems to indirect attacks. The attacking...
Provided by Universidad Autonoma de Madrid
-
White Papers
A Novel Statistical Generative Model Dedicated to Face Recognition
May 2009
In this paper, a novel statistical generative model to describe a face is presented, and is applied to the face authentication task. Classical generative models used so far in face recognition,...
Provided by Reed Elsevier
-
White Papers
Feature Distribution Modelling Techniques for 3D Face Verification
Feb 2010
This paper shows that Hidden Markov Models (HMMs) can be effectively applied to 3D face data. The examined HMM techniques are shown to be superior to a previously examined Gaussian Mixture Model...
Provided by Idiap Research Institute
-
White Papers
A Comparative Study of Two State-of-the Art Sequence Processing Techniques for Hand Gesture Recognition
Mar 2009
In this paper, the authors address the problem of the recognition of isolated, complex, dynamic hand gestures. The goal of this paper is to provide an empirical comparison of two state-of-the-art...
Provided by Ecole Polytechnique Federale de Lausanne
-
White Papers
Heterogeneous Face Recognition: Matching NIR to Visible Light Images
May 2010
Matching Near-InfraRed (NIR) face images to VISible light (VIS) face images offers a robust approach to face recognition with unconstrained illumination. In this paper, the authors propose a novel...
Provided by Michigan State University
-
White Papers
Heterogeneous Face Recognition Using Kernel Prototype Similarities
Feb 2011
Heterogeneous Face Recognition (HFR) involves matching two face images from alternate imaging modalities, such as an infrared image to a photograph, or a sketch to a photograph. Accurate HFR...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Face Recognition Across Time Lapse: On Learning Feature Subspaces
Dec 2011
There is a growing interest in understanding the impact of aging on face recognition performance, as well as designing recognition algorithms that are mostly invariant to temporal changes. While...
Provided by Michigan State University
-
White Papers
Face Recognition: Some Challenges in Forensics
Mar 2011
Face recognition has become a valuable and routine forensic tool used by criminal investigators. Compared to automated face recognition, forensic face recognition is more demanding because it must...
Provided by Michigan State University
-
White Papers
Face Tracking and Recognition at a Distance: A Coaxial & Concentric PTZ Camera System
Aug 2011
Face recognition has been regarded as an effective method of subject identification at a distance because of its covert and remote sensing capability. However, face images have a low resolution...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Restoring Degraded Face Images: A Case Study in Matching Faxed, Printed, and Scanned Photos
Jun 2011
The authors study the problem of restoring severely degraded face images such as images scanned from passport photos or images subjected to fax compression, downscaling, and printing. The purpose...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
On Matching Digital Face Images Against Scanned Passport Photos
Sep 2009
In this paper the problem of matching high-resolution digital face images against low-resolution passport photos scanned from the original document is studied. The challenges involved in such a...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Rank-Based Distance Metric Learning: An Application to Image Retrieval
Mar 2008
The authors present a novel approach to learn distance metric for information retrieval. Learning distance metric from a number of queries with side information, i.e., relevance judgements, has...
Provided by Michigan State University
-
White Papers
Tattoo-ID: Automatic Tattoo Image Retrieval for Suspect & Victim Identification
Dec 2007
Tattoos are used by law enforcement agencies for identification of a victim or a suspect using a false identity. Current method for matching tattoos is based on human-assigned class labels that is...
Provided by Michigan State University
-
White Papers
Facial Marks: Soft Biometric for Face Recognition
Feb 2010
The authors propose to utilize micro features, namely facial marks (e.g., freckles, moles, and scars) to improve face recognition and retrieval performance. Facial marks can be used in three ways:...
Provided by Michigan State University
-
White Papers
Predicting Biometric Authentication System Performance Across Different Application Conditions: A Bootstrap Enhanced Parametric Approach
May 2007
The performance of a biometric authentication system is dependent on the choice of users and the application scenario represented by the evaluation database. As a result, it is highly unlikely to...
Provided by University of Surrey
-
White Papers
A Method for Estimating Authentication Performance Over Time, With Applications to Face Biometrics
Oct 2007
Underlying biometrics are biological tissues that evolve over time. Hence, biometric authentication (and recognition in general) is a dynamic pattern recognition problem. The authors propose a...
Provided by University of Surrey
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White Papers
A Methodology for Identifying Weak Users for Controlled Enrollment and Multimodal Fusion
Jul 2008
Biometric performance assessment is made difficult by virtue of the fact that each user in the database introduces variability that cannot be controlled even with a well designed acquisition...
Provided by University of Surrey
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White Papers
On the Use of Log-Likelihood Ratio Based Model-Specific Score Normalisation in Biometric Authentication
May 2007
It has been shown that the authentication performance of a biometric system is dependent on the models/templates specific to a user. As a result, some users may be more easily recognised or...
Provided by University of Surrey
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White Papers
Group-Specific Score Normalization for Biometric Systems
Apr 2010
The problem of biometric menagerie, first pointed out by Doddington et al. (1998), is one that plagues all biometric systems. They observe that only a handful of clients (enrolled users in the...
Provided by University of Surrey
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White Papers
Making Better Biometric Decisions With Quality and Cohort Information: A Case Study in Fingerprint Verification
May 2009
Automatically recognizing humans using their biometric traits such as face and fingerprint will have very important implications in peoples' daily lives. This problem is challenging because...
Provided by University of Surrey
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White Papers
Model Based Separation of Overlapping Latent Fingerprints
Feb 2012
Latent fingerprints lifted from crime scenes often contain overlapping prints, which are difficult to separate and match by state-of-the-art fingerprint matchers. A few methods have been proposed...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Periocular Biometrics in the Visible Spectrum
Mar 2011
The term periocular refers to the facial region in the immediate vicinity of the eye. Acquisition of the periocular biometric is expected to require less subject cooperation while permitting a...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Quality Controlled Multimodal Fusion of Biometric Experts
Nov 2007
The quality of biometric samples used by multi-modal biometric experts to produce matching scores has a significant impact on their fusion. The authors address the problem of quality controlled...
Provided by University of Surrey
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White Papers
A Family of Methods for Quality-Based Multimodal Biometric Fusion Using Generative Classifiers
Aug 2008
Automatically verifying the identity of a person by means of biometrics (e.g., face and fingerprint) is an important application in peoples' day-to-day activities such as accessing banking...
Provided by University of Surrey
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White Papers
Handling High Dimensionality in Biometric Classification With Multiple Quality Measures Using Locality Preserving Projection
Apr 2010
The use of quality measures in biometrics is rapidly becoming the standard strategy for improving performance of biometric systems, especially in the presence of variable environmental conditions...
Provided by University of Surrey
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White Papers
Model and Score Adaptation for Biometric Systems: Coping With Device Interoperability and Changing Acquisition Conditions
Jan 2010
The performance of biometric systems can be significantly affected by changes in signal quality. In this paper, two types of changes are considered: change in acquisition environment and in...
Provided by University of Surrey
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White Papers
On Using Error Bounds to Optimize Cost-Sensitive Multimodal Biometric Authentication
Aug 2008
While using more biometric traits in multimodal biometric fusion can effectively increase the system robustness, often, the cost associated to adding additional systems is not considered. In this...
Provided by University of Surrey
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White Papers
Incorporating Variation of Model-Specific Score Distribution in Speaker Verification Systems
Dec 2007
It has been shown that the authentication performance of a biometric system is dependent on the models/templates specific to a user. As a result, some users may be more easily recognized or...
Provided by University of Surrey
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White Papers
A Unified Framework for Biometric Expert Fusion Incorporating Quality Measures
Apr 2011
This paper proposes a unified framework for quality-based fusion of multimodal biometrics. Quality-dependent fusion algorithms aim to dynamically combine several classifier (biometric expert)...
Provided by University of Surrey
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White Papers
On Matching Forensic Sketches to Mugshot Photos
Aug 2010
The problem of matching a forensic sketch to a gallery of mugshot images is addressed in this paper. Previous research in sketch matching offered solutions to matching highly accurate sketches...
Provided by Korea University
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